Whirlpool spa tub



FIG. 1 is a perspective view of a whirlpool spa tub showing our new design;

FIG. 2 is a top-plan view thereof;

FIG. 3 is a cross-sectional view taken along line 3--3 of FIG. 1;

FIG. 4 is a cross-sectional view taken along line 4--4 of FIG. 1;

FIG. 5 is a cross-sectional view taken along line 5--5 of FIG. 1; and

FIG. 6 is a cross-sectional view taken along line 6--6 of FIG. 1.

The fragmentary broken line around FIG. 1 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a whirlpool spa tub, as shown and described. 